Waterproof Rechargeable Bluetooth Hearing Amplifier Digital Hearing Ear Aid Sound Amplifier
Description:
• bluetooth version: bT5.0
• Frequency range: 20Hz-20KHz
• Hearing playback time: Standby for more than 20 hours. Use with more than 16 hours
Feature:
Wearing method: in-ear
Communication function: support
Applicable people: business, old people, fashion, public
Package included:
1X manual
